Change log level of "already exists" log messages from ERROR to WARNING

Fix issue #773

exec/tickit.js

@@ -205,10 +205,10 @@ function process_tic(tic)
 	// TODO: optionally delete replaced files even if it's not an overwrite
 	if (file_exists(path+tic.file) && !force_replace && !force_replace_area) {
 		if (typeof tic.replaces == 'undefined') {
-			log(LOG_ERROR, format('"%s" already exists in "%s", but has no matching Replaces line', tic.file, path));
+			log(LOG_WARNING, format('"%s" already exists in "%s", but has no matching Replaces line', tic.file, path));
 			return false;
 		} else if (!wildmatch(tic.file, tic.replaces)) {
-			log(LOG_ERROR, format('"%s" already exists in "%s", but TIC Replaces line is "%s"', tic.file, path, tic.replaces));
+			log(LOG_WARNING, format('"%s" already exists in "%s", but TIC Replaces line is "%s"', tic.file, path, tic.replaces));
 			return false;
 		} else {
 			if (!do_move(path, tic)) return false;